Hi All

I have 2 tables


Data Table
-----------------
RowKey: 1
=> (column=name, value=apple)
RowKey: 2
=> (column=name, value=orange)
RowKey: 3
=> (column=name, value=banana)
RowKey: 4
=> (column=name, value=mango)


Index Table (YYYYMMDDHH)
------------------------------------------------
RowKey: 2013030114
=> (column=1, value=)
=> (column=2, value=)
=> (column=3, value=)
RowKey: 2013030115
=> (column=4, value=)


I would like to know, how to implement below in MapReduce
1) first query the Index Table by RowKey: 2013030114
2) then pass the Index Table column names  (1,2,3) to query the Data Table

Thanks in advance.